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International Automotive Technicians Network

P0170 Diagnostic Trouble Code Discussion for April 2009

Fuel Trim Lean Or Rich (Bank 1)

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Trouble Ticket Help Requests for DTC P0170
Help Request Posted
1995 Toyota Tacoma DLX 2.7L Hesitation, Cuts out, Stall, Misfire, MIL Lamp on
P0170: fuel trim. Truck idles fine. Press peddle and just a blah with hardly any rpm increase. Have a constant recurring P01070 code (fuel trim). I did an unregulated fuel pressure test and it was good. If I open throttle with return line pinched rpms improve. Sounds like a pre...
April 26, 2009